PIC24FJ16MC101_12 Datasheet, PDF (107/350 Pages) Microchip Technology – 16-bit Microcontrollers (up to 32 KB Flash and 2 KB SRAM)

PIC24FJ16MC101/102 AND PIC24FJ32MC101/102/104
REGISTER 8-3: OSCTUN: FRC OSCILLATOR TUNING REGISTER
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
bit 15
U-0
U-0
—
—
bit 8
U-0
—
bit 7
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
TUN<5:0>⁽¹⁾
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-6
bit 5-0
Unimplemented: Read as ‘0’
TUN<5:0>: FRC Oscillator Tuning bits⁽¹⁾
011111 = Center frequency +11.625% (8.23 MHz)
011110 = Center frequency +11.25% (8.20 MHz)
•
•
•
000001 = Center frequency +0.375% (7.40 MHz)
000000 = Center frequency (7.37 MHz nominal)
111111 = Center frequency -0.375% (7.345 MHz)
•
•
•
100001 = Center frequency -11.625% (6.52 MHz)
100000 = Center frequency -12% (6.49 MHz)
Note 1: OSCTUN functionality has been provided to help customers compensate for temperature effects on the
FRC frequency over a wide range of temperatures. The tuning step size is an approximation and is neither
characterized nor tested.
© 2011-2012 Microchip Technology Inc.
Preliminary
DS39997C-page 107